Chapter 3 - Addressing on Networks

C

A Windows computer on your network is having issues resolving queries for a specific domain, but not other domains. Other computers on the same network resolve the name just fine. What command can you issue that might fix the problem? A. ipconfig /release B. ipconfig /renew C. ipconfig /flushdns D. ipconfig /refresh

true

A hexadecimal number is a number written in the base 16 number system.

B

What command can be used to check a domain computer's time source from a Command Prompt window? A. time --source B. w32tm /query /source C. ntpd show source D. date /source

B

What command can you utilize to display TCP/IP configuration information for each network adapter installed? A. ipconfig /list B. ipconfig /all C. ipconfig /full D. ipconfig /show

C

What does the MX record do in a forward DNS zone? A. It identifies the hostname and port of a computer that hosts a specific network service, such as FTP or SIP. B. It holds the alternative names for a host. C. It identifies the e-mail server to be used for e-mail traffic for the domain. D. It identifies the authoritative name server for a domain.

C

What utility is used to verify that TCP/IP installed, bound to the NIC, configured correctly, and communicating with the network? A. traceroute B. route C. ping D. ifconfig

C

With a FQDN of ftp1.dallas.mycompany.com, what part is the domain name? A. ftp1 B. ftp1.dallas.mycompany. C. mycompany.com D. ftp1.dallas

C

You are setting up a DNS zone and have been asked to create SPF and DKIM records. What type of DNS record will hold this information? A. PTR record B. CNAME record C. TXT record D. SRV record

false

The FTP protocol utilizes UDP, while TFTP uses TCP for data transmission.

true

UDP port 123 is utilized by the Network Time Protocol service.

C

You are troubleshooting a DNS issue on a Linux system, and need to test the resolution of your domain mycompany.com MX record using Google's DNS server with the IP address of 8.8.8.8. What dig command will accomplish this? A. dig query 8.8.8.8 domain mycompany.com type mx B. dig --server 8.8.8.8 --type=mx mycompany.com C. dig @8.8.8.8 mycompany.com MX D. dig -s 8.8.8.8 -t mx mycompany.com

B

You are troubleshooting a network issue on a client computer and discover that the network card has an IP address of 169.254.196.200. What does this mean? A. The network card has been erroneously assigned a loopback address. B. The computer is configured to use DHCP, but was unable to lease an address. C. The computer has been assigned a routed public IP address. D. The network card is set up for multicast communication.

D

Your supervisor has asked you to configure a new prototype network with a dual stack configuration. What does this mean? A. The router serving the network will have a redundant spare. B. Two different IPv4 address spaces will exist on the same network segment. C. The network will exist on two separate segments, separated by a proxy. D. Both IPv4 and IPv6 protocols will be used on the network.

true

Each organization that provides host services on the public Internet is responsible for providing and maintaining DNS authoritative servers for public access.

B

Encrypted control of remote computers using the RDP protocol is accomplished using what port number? A. UDP 161 B. TCP 3389 C. UDP 10000 D. TCP 22

A

How can you determine the manufacturer of a NIC card based on the MAC address? A. The first 24 bits, known as the Organizationally Unique Identifier, identify the manufacturer. B. The first 12 bits and last 12 bits combined are known as the Organizationally Unique Identifier. C. The last 24 bits, known as the Organizationally Unique Identifier, identify the manufacturer. D. The middle 24 bits, known as the Organization Universal Identifier, identify the manufacturer.

A

How do routers create a broadcast domain boundary? A. They do not forward broadcast traffic. B. They listen to and direct broadcast traffic. C. They forward broadcasts only to necessary segments. D. They only forward broadcasts that are intended for multiple subnets.

false

ICANN is responsible for restrictions on use of the .com, .org, and .net TLDs.

C

On a Linux-based system, what command can be used to display TCP/IP information associated with every interface on the system? A. ipconfig /all B. if status C. ifconfig -a D. ip show

false

An IPv6 address consists of 128 bits that are written as 10 blocks of hexadecimal numbers separated by colons.

D

At the Transport layer of the OSI, what is used to find and communicate with a particular application running on a host? A. IP addresses B. MAC addresses C. domain names D. port numbers

true

At the root level of the DNS hierarchical structure, 13 clusters of root servers hold information used to locate TLD servers.

false

DNS follows a centralized database model, allowing for easier management of DNS records.

A

If a host's IPv6 address contains the network adapter's MAC address within the last 64 bits of the IPv6 address, what standard is being used? A. EUI-64 B. MACin6 C. UUID-128 D. IEEE 802.36

A

In a DNS zone, what type of record holds the name-to-address mapping for IPv6 addresses? A. AAAA record B. TXT record C. PTR record D. A record

D

In the DNS hierarchy, where is information about how to find the top-level domain servers held? A. On DNS caching-only servers. B. In the organization's forward lookup zone. C. In the hosts file on the local machine. D. On the DNS root servers.

C

In the classful addressing scheme, what range of network addresses is considered a Class B? A. 1.x.y.z to 126.x.y.z B. 224.x.y.z to 255.x.y.z C. 128.0.x.y to 191.255.x.y D. 192.0.0.x to 223.255.255.x

false

The 1024 - 65535 range of ports is also known as the "well-known" range.

A

What is by far the most popular DNS server software available? A. BIND B. Dnsmasq C. Oracle Resolver D. Microsoft DNS

B

What is the ARPA domain suffix utilized for? A. It is used to announce records for other TLDs such as .com and .net. B. It is used for reverse DNS queries, and holds PTR records. C. It is a private TLD used for synchronization of zones between servers. D. It is a specialized government restricted TLD.

A

What part of a MAC address serves as the extension identifier, or device ID? A. The last 24 bits of the MAC address. B. The last 12 bits of the MAC address. C. The first 12 bits of the MAC address. D. The first 24 bits of the MAC address.

D

What statement regarding the Server Message Block protocol is accurate? A. It is a protocol used for accessing network-based LDAP directories. B. It is a simple protocol used to synchronize block messages written to iSCSI drives on a network. C. It is a signaling protocol used to make a connection between hosts prior to data transfer. D. It is used by Windows and UNIX-based operating systems to share files.

D

What text editor can be used on Linux to view and edit the contents of a configuration file? A. Microsoft Word B. edit C. Notepad D. vim

A

What type of IPv6 address is fe80::8cf1:2c42:ffde:da1c? A. link local address B. multicast address C. anycast address D. global address

C

When using DHCP for IPv6 (i.e. DHCPv6), what port do clients receive responses on? A. port 68 B. port 546 C. port 547 D. port 67

true

When using IPv6, two or more nodes on the same link are said to be neighbors.

B

Which of the following IP addresses would be a loopback IP address? A. 192.168.1.1 B. 127.0.0.1 C. 169.254.0.1 D. 224.0.0.1

D

Which of the following IPv6 addresses represents a global unicast address? A. FE80::10 B. FC00::/7 C. FD00::/8 D. 2000::/3

D

Which of the following is NOT a range of IP addresses recommended for use in private networks? A. 192.168.0.0 through 192.168.255.255 B. 172.16.0.0 through 172.31.255.255 C. 10.0.0.0 through 10.255.255.255 D. 127.0.0.0 through 127.255.255.255

A

Which of the following protocols is used as a signaling protocol for the initial connection between hosts, but does not participate in data transfer during the session? A. SIP B. TFTP C. NTP D. LDAP